Strand 5: Environmental Systems and Plumbing — Conceptual Foundations, Design Logic, and Field Practice

Environmental Systems

Parts of the built environment that manage air, water, waste, heat, and moisture in buildings.

Plumbing

Not just pipes; a public health system that ensures safe drinking water, waste removal, and indoor air quality.

Pressure

The force exerted by water in a plumbing system, critical for delivering water to fixtures.

Cross-Connection Control

Methods used to prevent contamination of potable water through connections with non-potable sources.

Backflow Prevention

Techniques to stop the reverse flow of water from non-potable systems back into the potable water supply.

Drain-Waste-Vent (DWV) Piping

System of pipes that removes wastewater and prevents sewer gases from entering buildings.

Traps

Curved sections of plumbing that hold water to create a seal against sewer gases.

Ventilation

The process of supplying fresh air to indoor spaces and expelling stale air, essential for indoor air quality.

Potable Water Supply System

Brings safe water from a source to a building and distributes it to fixtures.

Elevation Loss

The reduction in water pressure due to the height difference between the water supply and the fixture.

Friction Loss

Loss of pressure in water flow due to contact with the pipe walls and fittings.

Trunk-and-Branch System

A plumbing distribution layout with a main line (trunk) and smaller offshoots (branches) to fixtures.

Home-Run System

Each plumbing fixture has its own dedicated line from a central manifold.

Looped System

A plumbing layout that reduces pressure loss and increases reliability by creating a loop.

Metallic Piping

Durable pipes, often made of copper or steel, that may corrode depending on water chemistry.

Plastic Piping

Lightweight and corrosion-resistant pipes used in plumbing, sensitive to temperature and installation.

Water Hammer

A pressure surge in pipes caused by the sudden stop of water flow, potentially damaging plumbing.

Stagnation

Condition when water in low-use pipes sits for long periods, degrading its quality.

Recirculation Loop

System that continuously moves hot water to ensure immediate availability at fixtures.

Tempering Valve

Mixing valve used to control water temperature at a tap, merging hot and cold water.

Siphonage

The negative pressure that can pull water out of a trap, causing sewer gases to enter a building.

Cleanouts

Access points in the plumbing system that allow for maintenance and cleaning of drain lines.

Sanitary Drainage

System that carries wastewater from fixtures to a sewer or treatment facility.

Storm Drainage

System that collects and transports rainwater away from buildings to prevent flooding.

Cross-Connection

Any physical connection between potable water and potential contamination sources.

Air Gap

Physical separation between the outlet of a fixture and the flood level rim to prevent backflow.

Backwater Valve

Device that prevents sewage from backflowing into a building through the drainage system.

Foundation Drainage

System designed to direct groundwater away from a building's foundation to prevent moisture issues.

Sump Pump

Pump installed in a basement to remove accumulated water when gravity drainage is insufficient.

Condensation

Water droplets formed when the temperature of a surface is below the dew point of the surrounding air.

Moisture Control

Strategies and systems used to manage and mitigate unwanted moisture in buildings.

Sustainability in Plumbing

Managing water and energy efficiently while minimizing environmental impact.

Water Conservation

Practices and technologies designed to reduce water consumption.

Indoor Environmental Quality (IEQ)

The quality of a building's indoor environment, significantly influenced by plumbing and HVAC systems.

Commissioning

The process of verifying that building systems are installed correctly and operate as intended.

Troubleshooting

Systematic approach to diagnosing and resolving plumbing system failures or inefficiencies.

Flow Rate

The volume of water moving through a pipe per unit of time, essential for system design.

Slip Joint

Type of connection in plumbing that allows for movement and adjustment, often used in traps.

Fixture Design

The configuration and functionality of a plumbing fixture, aimed at user effectiveness and safety.

User Safety

Considerations in plumbing design to protect users from hazards like scalding or slip hazards.

Pollution Prevention

Strategies to reduce contamination in plumbing systems, critical for public health.

Public Health Connection

The link between plumbing practices and the protection of community health from waterborne diseases.

Vent Stack

Vertical pipe that allows air into the drainage system to maintain pressure balance and trap seals.

Hot Water System

The plumbing system designed to provide and maintain hot water for fixtures and appliances.

Sewer Gas

Unpleasant and potentially hazardous gases produced by decomposition in wastewater systems.

Fixture Performance

The efficiency of a plumbing fixture in performing its intended function and delivering water.